tu58fs - PDP-11 file sharing with TU58 tape emulator

At least some systems don't use Bxxxx constants except for compatability - they simply stick the baudrate in c_ospeed and/or c_ispeed. (I don't use FreeBSD myself; I don't know whether it's one of them or not.) But there were a bunch of other undefined symbols too, many of which (eg, CRDLY, NLDLY) I don't recognize and which are not present in at least one other termio implementatino (NetBSD's). So at least part of the problem is that the code isn't all that portable. I notice you used gmake, from which I infer the Makefile is GNU-make-specific, which makes it at least somewhat likely the code was written for Linux, which makes the nonportabilities less surprising. (Code being written for Linux correlates positively, in my experience, with it assuming every system matches the developer's. Not that this is necessarily bad - I've done it myself often enough, though not often with Linux - but it does, to some extent, explain what you're seeing.) /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML mouse at rodents-montreal.org / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B